Abstract

References
1.
Cox
N. J.
2003 . Stata tip 2: Building with floors and
ceilings . Stata Journal
3 : 446 –447 .
2.
Cox
N. J.
2007 . Stata tip 43: Remainders, selections,
sequences, extractions: Uses of the modulus . Stata
Journal
7 : 143 –145 .
3.
Dershowitz
N.
, and
Reingold
E. M.
2008 . Calendrical Calculations. 3rd ed.
Cambridge : Cambridge
University Press.
4.
Holford-Strevens
L.
2005 . The History of Time: A Very Short
Introduction.
Oxford : Oxford University
Press.
5.
Richards
E. G.
1998 . Mapping Time: The Calendar and Its History.
Oxford : Oxford University
Press.
